Turkish Airlines Pet Policy and Seat Selection Issues

I registered my pet for an international flight and attempted to select a seat multiple times. However, the system canceled my seat selection every time after 2 hours. I contacted customer service and created multiple records, and I also registered several times through the Turkish Airlines website. I received an email stating that the seat selection was made, but when I checked, the seat appeared empty. I was told that a window seat could be taken for free for a person with a pet. We wanted to select seat 29A as it was a window seat with no seat in front of it. Since the pet is placed under the front seat, I specifically asked if 29A was suitable for us. I communicated this both in writing and verbally. We were told there was no problem and that we could make the selection. It has been 10 days since my last feedback, and I have not received a response. Three days ago, I provided feedback again, and today I saw that seat 29A was changed to an extra legroom seat.

We have been struggling with this issue for over a month, and although seat 29A has been selected multiple times, it was canceled by the system each time. Now it is being sold as an extra legroom seat. They are essentially saying that if you want a specific seat, you will not get it for free; instead, you will pay four times the price of a standard seat. I doubt they feel any shame for being such a money-focused company. If I weren't obligated, I would never use such a money-hungry company.